Mainstem Rivers of the Conterminous United States (ver. 2.0, February 2023)
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Mainstem rivers are the backbone of a connected network of hydrologic units that cover the landscape. A mainstem connects a headwater source area to an outlet. This...
主干河流(Mainstem rivers)是覆盖地表景观的连通水文单元网络的核心骨干。一条主干河流将河源区与流域出水口相连。此……



